Short aws lambda sample program that puts an item into dynamodb

lambda-dynamo.js

console.log('Loading event');
var AWS = require('aws-sdk');
var dynamodb = new AWS.DynamoDB({apiVersion: '2012-08-10'});

exports.handler = function(event, context) {
    console.log("Event data:");
    console.log(JSON.stringify(event, null, '  '));
    dynamodb.listTables(function(err, data) {
      console.log(JSON.stringify(data, null, '  '));
    });
    var tableName = "event-RSSI";
    var rectime = new Date().getTime().toString();
    dynamodb.putItem({
        "TableName": tableName,
        "Item" : {
            "coreid": {"S": event.coreid },
            "published_at": {"S": event.published_at },
            "rectime": {"S": rectime },
            "data": {"S": event.data }
        }
    }, function(err, data) {
        if (err) {
            context.done('error','putting item into dynamodb failed: '+err);
        }
        else {
            console.log('great success: '+JSON.stringify(data, null, '  '));
            context.done('K THX BY');
        }
    });
};